pom.xml增加：

<!--sentinel-->
<dependency>
<groupId>com.alibaba.csp</groupId>
<artifactId>sentinel-core</artifactId>
<version>1.8.6</version>
</dependency>
<dependency>
<groupId>com.alibaba.csp</groupId>
<artifactId>sentinel-annotation-aspectj</artifactId>
<version>1.8.6</version>
</dependency>
<dependency>
<groupId>com.alibaba.csp</groupId>
<artifactId>sentinel-transport-simple-http</artifactId>
<version>1.8.6</version>
</dependency>
<dependency>
<groupId>com.alibaba.csp</groupId>
<artifactId>sentinel-web-servlet</artifactId>
<version>1.8.6</version>
</dependency>
<!--sentinel end-->

代码增加config bean:

import com.alibaba.csp.sentinel.adapter.servlet.CommonFilter;
import com.alibaba.csp.sentinel.annotation.aspectj.SentinelResourceAspect;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.servlet.Filter;
@Configuration
publicclassSentinelConfig{
@Bean
publicSentinelResourceAspect sentinelResourceAspect(){
returnnewSentinelResourceAspect();
}
@Bean
publicFilterRegistrationBean sentinelFilterRegistration(){
FilterRegistrationBean<Filter> registration =newFilterRegistrationBean<>();
        registration.setFilter(newCommonFilter());
        registration.addUrlPatterns("/api/*");
        registration.setName("sentinelFilter");
        registration.setOrder(1);
return registration;
}
}

相关官方文档：

https://sentinelguard.io/zh-cn/docs/annotation-support.html